Reviewed by the SG Power technical team at SG Power Products Pvt. Ltd. | Last updated: 2 November 2026
Among air cooled servo voltage stabilizer manufacturers in India, SG Power Products Pvt. Ltd. makes single-phase and three-phase models from 10 kVA to 50 kVA. Each unit holds the output within ±1% when the mains rises or falls. The range suits homes, offices, shops, clinics, showrooms and workshops with a clean, ventilated room.
As air cooled servo voltage stabilizer suppliers in Noida, we sell direct, not through traders, and build every unit in our own Ghaziabad factory. Homeowners, business owners, contractors and consultants across India buy from us at factory prices.
10 kVA Servo Stabilizer
Single or three phase
View details15 kVA Servo Stabilizer
Single or three phase
View details20 kVA Servo Stabilizer
Three phase
View details25 kVA Servo Stabilizer
Three phase
View details30 kVA Servo Stabilizer
Three phase
View details40 kVA Servo Stabilizer
Three phase
View details50 kVA Servo Stabilizer
Three phase
View detailsIn short, SG Power manufactures and supplies air cooled servo voltage stabilizers from 10 kVA to 50 kVA, single phase and three phase. Their transformers are cooled by air, not oil, and they give ±1% regulation at 97% efficiency, tested to IS 2026 (Part 1). They suit clean, ventilated indoor rooms across India.
| Brand | KNEUTRON, made by SG Power Products Pvt. Ltd. in India |
| Capacity | 10 kVA to 50 kVA |
| Phase | Single phase (10 and 15 kVA) and three phase (10 kVA to 50 kVA) |
| Cooling | Air (natural or fan airflow) |
| Output | ±1% regulation, 97% efficiency tested to IS 2026 (Part 1), 100% load continuously (full specifications below) |
| Price | On request |
| Supply | Across India, from Noida and the Ghaziabad factory; service in 127+ cities |
Source: SG Power product catalogue (February 2026), the KNEUTRON servo stabilizer catalogue and SG Power's air cooled datasheets. Figures checked November 2026.
Buy your air cooled servo voltage stabilizer direct from SG Power, a manufacturer that designs every unit, winds its transformers and tests it before dispatch. You get factory pricing, free sizing from your load list, and an input range and design matched to your site, whether it is a flat, a clinic or a workshop.
| From SG Power (Manufacturer) | From a Trader or Reseller |
|---|---|
| Factory pricing, no middleman margin | Reseller margin added |
| Sizing by the team that builds the unit | Advice varies by seller |
| Custom input ranges and balanced or unbalanced designs | Mostly stock models only |
| Transformers and variacs wound and tested in-house | Source of parts often unknown |
| Every unit tested through 173 checkpoints | Testing depends on the source |
| Service network in 127+ cities | Depends on the reseller |
Many air cooled servo voltage stabilizer suppliers resell stock models from other makers. SG Power is both manufacturer and supplier, so it builds each unit for your load and site voltage.
An air cooled servo stabilizer is a servo voltage stabilizer whose variac and buck-boost transformer are cooled by air flowing through the cabinet. It needs no oil tank, so it is lighter, more compact and easier to place indoors. Air cooling suits small and medium loads up to 50 kVA.
It is also called a servo controlled voltage stabilizer, an air cooled automatic voltage regulator (AVR) or simply an air cooled stabilizer. Some buyers spell it servo stabiliser or voltage stabiliser. Like every servo unit, it uses a servo motor to turn a variac, so the output stays within ±1% through low-voltage dips, high-voltage swells and other voltage fluctuations. This steady voltage correction protects sensitive equipment and improves power quality at the site.
| Part | What It Does |
|---|---|
| Microcontroller (KNEUTRON) | Measures input and output voltage with true RMS sensing and decides the correction |
| Servo motor (AC stepper motor) | Turns the variac in small, smooth steps |
| Variac (dimmer) | A variable autotransformer that sets how much correction is needed |
| Buck-boost transformer | Adds voltage when the mains is low and subtracts it when the mains is high |
| Ventilated cabinet | Lets air carry heat away from the transformers |
An air cooled servo voltage stabilizer senses the voltage continuously and corrects it through a motor-driven variac and buck-boost transformer. Heat dissipation works by natural or fan-forced airflow, which carries heat out through the cabinet vents. Keeping the vents clear and the room ventilated keeps the unit running cool.
Sense: the microcontroller reads the input and output voltage on each phase.
Compare: it compares the output with the set voltage, such as 230V or 410V.
Correct: the servo motor turns the variac, and the buck-boost transformer adds or subtracts voltage.
Cool: airflow through the cabinet removes heat from the transformers.
For a step-by-step explanation, read how a servo stabilizer works.
SG Power's air cooled servo stabilizer range covers 10 kVA to 50 kVA. The 10 and 15 kVA units come in single phase and three phase, for residential and small commercial sites. The 20, 25, 30, 40 and 50 kVA units are three phase, for workshops, showrooms, schools, hospitals and small factories. Each capacity page gives full details.
| Capacity | Phase | Typical Running Load (25% margin) | Typical Users |
|---|---|---|---|
| 10 kVA air cooled | Single or three phase | Up to about 6.4 kW | Flats, clinics, shops, small offices |
| 15 kVA air cooled | Single or three phase | Up to about 9.6 kW | Large homes, villas, offices, small workshops |
| 20 kVA air cooled | Three phase | Up to about 12.8 kW | Large homes, clinics, office floors, workshops |
| 25 kVA air cooled | Three phase | Up to about 16 kW | Workshops, CNC machines, showrooms |
| 30 kVA air cooled | Three phase | Up to about 19.2 kW | Small factories, hospital wings, bungalows |
| 40 kVA air cooled | Three phase | Up to about 25.6 kW | Mid-size factories, hotels, housing societies |
| 50 kVA air cooled | Three phase | Up to about 32 kW | Small factories, hospitals, schools, offices |
Running load = kVA × 0.8 power factor, less a 25% safety margin. As air cooled servo voltage stabilizer suppliers, we also build other capacities between 10 and 50 kVA, and other input ranges, to customer requirements. Above 50 kVA, see our oil cooled servo stabilizers.
Not sure which air cooled capacity you need? Send us your load list, and we'll size it for free.
The air cooled servo stabilizer price depends on capacity, single or three phase, input range and design. SG Power quotes every size on request after a free load check. You get a price for the exact model your site needs, with GST, freight and installation shown separately.
| Capacity | Phase | SG Power Price |
|---|---|---|
| 10 kVA air cooled | Single or three phase | 32000* + GST |
| 15 kVA air cooled | Single or three phase | Price on request |
| 20 kVA air cooled | Three phase | Price on request |
| 25 kVA air cooled | Three phase | Price on request |
| 30 kVA air cooled | Three phase | Price on request |
| 40 kVA air cooled | Three phase | Price on request |
| 50 kVA air cooled | Three phase | Price on request |
GST, freight and installation are shown separately in the quote. * Prices are indicative. For the latest price, contact SG Power.
The air cooled servo voltage stabilizer price rises with capacity and with a wider input range, because both need a larger variac and transformer. A three-phase or unbalanced design and extras such as a bypass switch also add cost. Ask every seller to quote the same specification so prices compare fairly.
| Factor | Effect on Price |
|---|---|
| Capacity (kVA) | Larger units need bigger transformers and variacs |
| Single or three phase | Three-phase units have three sets of variac, transformer and motor |
| Input voltage range | A wider range needs a larger transformer |
| Balanced or unbalanced design | Unbalanced units correct each phase separately |
| Extras | Bypass switch, input MCB or MCCB, data logging |
| Delivery and installation | Freight, installation and GST are added to the delivered price |
To choose the right air cooled servo stabilizer capacity, add up the power (kW) of everything that runs at the same time. Divide by a 0.8 power factor to get kVA, then add a 25% safety margin. Choose the next size up, and move to oil cooling above 50 kVA.
List the loads: add up the kW of all equipment that runs together.
Convert to kVA: divide the total kW by 0.8.
Add a margin: multiply by 1.25 for starting current and future loads.
Choose the size: pick the next SG Power air cooled load capacity above the result.
| Running Load | Calculated Size | SG Power Air Cooled Size |
|---|---|---|
| Up to about 6 kW | Up to about 9.4 kVA | 10 kVA |
| About 9 kW | About 14 kVA | 15 kVA |
| About 15 kW | About 23 kVA | 25 kVA |
| About 30 kW | About 47 kVA | 50 kVA |
| Above about 32 kW | Above 50 kVA | Oil cooled range |
For example, an office running 9 kW of ACs, computers and lights needs 9 ÷ 0.8 × 1.25, or about 14 kVA. A 15 kVA air cooled servo voltage stabilizer fits.
Choose a single phase air cooled servo stabilizer if your building has a single-phase supply, as most flats, homes and small shops do. Choose a 3 phase air cooled servo stabilizer if you have a three-phase connection, as most offices, workshops and small factories do. SG Power makes single-phase units at 10 and 15 kVA.
| Single Phase Air Cooled | Three Phase Air Cooled | |
|---|---|---|
| Supply | One phase and neutral (230V) | Three phase, four wire: three phases and neutral (415V) |
| SG Power capacities | 10 and 15 kVA | 10 kVA to 50 kVA |
| Standard input range | 170–270V or 190–270V | 340–480V phase to phase (170–280V phase to neutral) |
| Output voltage | 230V ±1% (220/230/240V settable) | 410V ±1% phase to phase (230V ±1% phase to neutral) |
| Typical users | Flats, homes, clinics, shops | Offices, workshops, showrooms, small factories |
Choose an air cooled unit for loads up to 50 kVA in a clean, dry, ventilated indoor room.Choose an oil cooled servo stabilizer for heavier loads, dusty, humid or hot sites, and round-the-clock industrial use. SG Power oil-cooled models are available from 60 to 500 kVA.
| Air Cooled | Oil Cooled | |
|---|---|---|
| SG Power range | 10 kVA to 50 kVA | 60 to 500 kVA |
| How it is cooled | Natural or fan airflow through the cabinet | Transformers immersed in oil |
| Best site | Clean, dry, ventilated indoor rooms | Dusty, humid or hot sites; heavy industrial loads |
| Weight and size | Lighter, more compact | Heavier, needs a firm base |
| Maintenance | Dust cleaning, vent and brush checks | Also oil level and condition checks |
| Typical users | Homes, offices, shops, clinics, workshops | Factories, hospitals, hotels, big buildings |
The air cooled vs oil cooled stabilizer choice is about the room as much as the load. If the room is dusty, hot or closed, ask us about oil cooling even below 50 kVA.
Choose a balanced air cooled servo stabilizer when all three phases carry similar loads, such as three-phase motors and machines. Choose an unbalanced air cooled servo stabilizer when each phase feeds different single-phase loads, such as ACs, lights and computers in an office. An unbalanced unit senses and corrects each phase on its own.
| Balanced | Unbalanced | |
|---|---|---|
| How it corrects | Corrects all three phases together | Corrects each phase separately |
| Best for | Three-phase motors and machines | Offices, shops and homes with mixed single-phase loads |
| Price | Lower | Higher |
Tell us how your loads are spread across the phases when you ask for a quote, and we'll recommend the right design.
SG Power air cooled servo voltage stabilizer specifications cover every capacity from 10 kVA to 50 kVA. Each unit regulates the output within ±1% at 97% efficiency, tested as per IS 2026 (Part 1):1977, with an adjustable output delay of 3 to 200 seconds. Any other input range can be built to customer specification to suit the site conditions.
| Parameter | Specification |
|---|---|
| Rated capacity | 10 kVA to 50 kVA |
| Input voltage (three phase) | 340–480V phase to phase, 170–280V phase to neutral (SG Power datasheet); custom ranges on request |
| Input voltage (single phase) | 170–270V or 190–270V; custom ranges on request |
| Output voltage | 410V ±1% phase to phase and 230V ±1% phase to neutral (SG Power datasheet); single phase 230V ±1% (220/230/240V settable) |
| Regulation | ±1% |
| Efficiency | 97%, tested as per IS 2026 (Part 1):1977 (SG Power datasheet) |
| Output frequency | 50 Hz ±3% |
| Output delay | 3–200 seconds, adjustable |
| Control | KNEUTRON microcontroller, true RMS sensing without a control transformer |
| Motor | High-torque AC stepper motor |
| Transformers | Wound and tested in-house on grain-oriented silicon steel for low iron and no-load losses; built to IS 5142 and IS 2026 |
| Applicable standard | IS 9815 (Part 1)-1984 (SG Power datasheet) |
| Test certification | NABL tested (SG Power datasheet) |
| Insulation resistance | 7 mega-ohms at 500 V DC, at not more than 45°C (SG Power datasheet) |
| Leakage current | 32 micro-amperes under normal operating conditions, tested as per IS 302-1:1979 (SG Power datasheet) |
| Winding | Pure copper, epoxy coated (SG Power datasheet) |
| Housing | Powder coated CRC sheet (SG Power datasheet) |
| Mounting | Floor mounting (SG Power datasheet) |
| Cooling | Air (natural or fan airflow) |
| Design | Balanced or unbalanced (three phase) |
| Duty | 100% load, continuous |
| Country of manufacture | Made in India, at SG Power's Ghaziabad factory |
The rows marked “SG Power datasheet” are the guaranteed technical particulars from SG Power's air cooled datasheets. Other values come from the KNEUTRON servo stabilizer catalogue. Features and specifications may change as the technology is improved, so final values are confirmed in our quotation. The IS standards are published by the Bureau of Indian Standards.
Every SG Power air cooled servo stabilizer is a microcontroller-based digital servo stabilizer, with a KNEUTRON controller, a front-panel display and ±1% voltage regulation. Its protections cut off the output on over-voltage, under-voltage, overload, phase reversal and single phasing, with an adjustable trip time delay. Calibration is done on a touchpad, without potentiometers.
The display shows phase-to-neutral and phase-to-phase voltage, frequency and the output current of each phase. You can set the output voltage and the input voltage band, and choose manual or automatic start and stop.
| Protection | What It Guards Against |
|---|---|
| Over-voltage cut-off | High mains voltage reaching appliances and machines |
| Under-voltage cut-off | Very low voltage that overheats motors and compressors |
| Overload cut-off | Load above the set limit; the display shows “Overload”, and the output restarts once the load is reduced and Start is pressed |
| Trip time delay (3–200 seconds) | Compressor and motor damage when power returns after a cut |
| Phase reversal cut-off (three phase) | Wrong phase sequence; the display shows “Ph. Reversal”, and the unit restarts once two incoming phases are interchanged and Start is pressed |
| Single phasing protection (three phase) | Loss of one phase, which can burn out three-phase motors |
Need an air cooled servo stabilizer with a custom input range? We build to your site conditions.
The main advantages of an air cooled servo stabilizer are its compact size, lighter weight, no oil to check and easy indoor placement. Its limitations are that it needs a clean, ventilated room, and it is offered only up to 50 kVA. Dusty or hot sites are better served by oil cooling.
| Advantages | Limitations |
|---|---|
| Compact and lighter, easy to place indoors | Needs a clean, dry, ventilated room |
| No oil, so no oil level checks or leaks | Dust on vents and transformers must be cleaned regularly |
| ±1% output, smooth and stepless | Carbon brush and variac track wear, so yearly service is needed |
| Handles full load continuously | Offered up to 50 kVA; larger loads need oil cooling |
| Adds no waveform distortion | No electrical isolation; add a surge protection device |
Add a surge protection device ahead of the stabilizer, since a servo stabilizer gives no electrical isolation.
Air cooled servo stabilizers are used where loads are up to 50 kVA and the unit sits in a clean indoor room. Typical users are homes and villas, offices, shops, clinics, diagnostic centres, showrooms, schools, banks and light workshops. They protect ACs, lifts, computers, machines and medical equipment.
Homes and villas: mainline protection for ACs, fridges, pumps and electronics
Offices and banks: computers, servers, printers, ACs and lighting; a common servo stabilizer for office buildings
Clinics and diagnostic centres: medical equipment, ACs and lifts
Shops and showrooms: lighting, display cooling, billing systems and ACs
Schools and institutions: computer labs, lifts and building services
Light workshops: a servo stabilizer for CNC machines, lathes, compressors and other sensitive machinery
Low-voltage areas: sites where the evening voltage dips below the normal band, using a custom wider input range
Electrical contractors, consultants and builders also buy from us as air cooled servo voltage stabilizer suppliers for projects that need several units across flats, offices or sites.
An air cooled servo voltage stabilizer for home use protects every appliance from one mainline unit, instead of a separate stabilizer for each AC or fridge. Most homes need a 10 or 15 kVA single-phase unit, depending on how many ACs run together. Install it after the meter, before the distribution board.
Choose the 10 kVA air cooled servo stabilizer for a flat with two or three ACs, or the 15 kVA air cooled servo stabilizer for a large home or villa. A three-phase home supply needs a three-phase or unbalanced unit.
Place an air cooled unit indoors in a clean, dry room with good airflow, away from direct sun, rain, dust and steam. Leave clear space around the vents, and never cover the unit or block it with stored items. Good ventilation keeps the transformers cool and the unit reliable.
| Do | Avoid |
|---|---|
| A dry, ventilated indoor room or electrical room | Open sheds, balconies and outdoor walls |
| Clear space around the vents on all sides | Cupboards, boxes and covers over the unit |
| A firm, level base | Wet floors and areas near water tanks |
| A spot away from kitchens, boilers and steam | Dusty production areas and cement or flour mills |
| A room with a normal ambient temperature | Hot rooms next to DG sets, boilers or furnaces |
Have a qualified electrician install the air cooled servo stabilizer on the mainline, after the meter or DG changeover and before the distribution board. Connect it to a proper earthing system, keep the vents clean, and book a yearly service. Simple weekly and three-monthly checks keep it accurate.
Size the cables for the input current at your lowest voltage
Connect the body to the building's earthing system, using earthing rods, earthing clamps and an earth pit cover
Connect any UPS or inverter after the stabilizer, never before it
Use the bypass switch only during servicing; equipment is unprotected in bypass
Fit surge protection devices ahead of the stabilizer, and lightning protection where needed
| Task | How Often | Who |
|---|---|---|
| Check input and output readings | Weekly | User |
| Clean dust from vents and fans | Every 3 months, or monthly in dusty areas | User or electrician |
| Check for loose connections and heating marks | Every 6 months | Electrician |
| Inspect and replace worn carbon brushes | Yearly, or if correction slows | Trained technician |
| Full service and calibration | Yearly, or under an AMC | SG Power service |
Indian homeowners and electricians on forums such as TechEnclave, Team-BHP and HiFiVision share similar lessons about servo stabilizers. Measure your real site voltage first, leave load headroom and keep geysers off the stabilized line. Wire the stabilizer before any inverter, and choose a supplier with quick local service.
| Common Concern on Forums | What to Do |
|---|---|
| Voltage falls very low in the evenings | Record the voltage in the morning, evening and night for a few days. Ask for a custom input range if the lowest reading is below the standard band. |
| AC compressors or motors trip when the voltage dips | Size with a 25% margin for starting current, and set the output delay so compressors restart only after the voltage settles. |
| Stabilizer runs at full rating all day | Choose the next size up, so the unit is not loaded to 100% of its rating for long hours in a warm room. |
| Geysers and heaters overload the unit | Wire geysers and room heaters on a separate, unstabilized circuit; heating loads tolerate voltage changes. |
| Three-phase supply at home | Use a three-phase or unbalanced unit, or have an electrician move the main loads to one phase for a single-phase unit. |
| Equipment still restarts after installation | Test with the stabilizer on bypass. If the problem continues, ask an electrician to check the wiring and any loose neutral. |
| Unit is heavy and hard to place later | Plan floor space on a firm, level base near the main distribution board before delivery. |
Facing low voltage or frequent trips at your site? Share your voltage readings and load list, and we'll size the right unit.
To choose between air cooled servo voltage stabilizer manufacturers and suppliers, first check that the unit suits your load, phase, room and lowest site voltage. Then compare regulation, efficiency, protections, in-house manufacturing, testing and local service. Ask every seller the same questions, and get the answers in writing.
Do you manufacture the stabilizer, or resell another company's unit?
What input range does it cover, and is it balanced or unbalanced?
What output regulation and efficiency does it have, in writing?
Are the transformers and variacs made and tested in-house?
Which protections are included, and is there an adjustable time delay?
Is my room suitable for air cooling, or do I need oil cooling?
Are GST, freight, installation and a bypass switch included in the price?
Who services the unit near my site, and are spare parts available locally?
Air cooled servo voltage stabilizer manufacturers design the unit, wind its transformers and variacs, and assemble and test it in their own factory. Suppliers, traders, dealers and distributors buy finished units and resell them. Some companies, such as SG Power, are both, so the buyer deals with the maker directly.
SG Power also supplies dealers, contractors and project buyers, and serves international markets. See the comparison under Buy Direct above.
Buying an air cooled servo voltage stabilizer from SG Power takes five simple steps, from sharing your load details to installation. Our team sizes the unit and sends a written quote. The unit is then built and tested in our Ghaziabad factory before it is dispatched to your site.
Share your details: load list, phase, lowest and highest site voltage, room conditions and site location.
Get sizing and a quote: we recommend the capacity, input range and design, and send a written quote.
Confirm the order: approve the specification and the quote.
Manufacturing and testing: the unit is manufactured and tested in our Ghaziabad factory before dispatch.
Dispatch and installation: the unit is sent to your site, with installation support on request.
Buyers choose SG Power among air cooled servo voltage stabilizer manufacturers because it has built power products for 15+ years, winds its transformers in-house and tests every unit before dispatch. It offers single-phase and three-phase, balanced and unbalanced designs, and custom input ranges, with service in 127+ cities.
| Why SG Power | Detail |
|---|---|
| Experience | 15+ years of manufacturing electrical and power products |
| Factory | 7,000 sq m in Ghaziabad, 84 machines, 250+ employees |
| Quality checks | 100% of units tested; a 3-level quality check covering 173 checkpoints |
| Certifications | ISO 9001:2015 certified organisation; RoHS certificate covering servo stabilizers; MSME and SSI registered |
| Customers | 5,937+ customers in 319+ cities; after-sales service network in 127+ cities |
| Full range | Air cooled 10–50 kVA and oil cooled 60 - 500 kVA, plus transformers, earthing and lightning protection |
The servo stabilizer design has been tested at an NABL-accredited laboratory, and SG Power is an ISO 9001:2015 certified organisation. Learn more about SG Power.
SG Power's servo stabilizers, earthing, lightning protection and other electrical products are supplied to government bodies, PSUs and well-known companies across India. These buyers include power utilities, metro and railway projects, defence units and large manufacturers. The organisations below appear with purchase orders in SG Power's catalogue:
| Sector | Organisations |
|---|---|
| Power and utilities | POWERGRID, NTPC, BHEL, NPCL, Adani, Reliance Power |
| Infrastructure and metro | L&T, Alstom, Indian Railways, Tata (smart city project), Welspun |
| Defence and government | DRDO, Indian Army, Indian Air Force, BSF, Ministry of Defence, Airports Authority of India |
| Industry, telecom and corporate | Hindalco, JK Cement, Jubilant, Bhushan Power, BSNL |
Project Location - Karnataka
Power infrastructure project with advanced electrical solutions.
Project Location - Kanheri Hills
Defence sector electrical and protection systems.
Project Location - Hyderabad
Airport infrastructure and electrical safety solutions.
Project Location - Pune
Metro rail electrical installations and grounding systems.
Project Location - Ajmer
State electricity distribution network solutions.
Project Location - Jodhpur
Power distribution and earthing solutions.
Project Location - Bangalore, Noida
Heavy electrical and industrial power systems.
Project Location - Odisha
Steel industry electrical infrastructure solutions.
Project Location - Nashik, Chhattisgarh
Defence-grade electrical protection systems.
Project Location - Lucknow, Jabalpur
Telecom infrastructure and grounding systems.
Project Location - Ghaziabad
Government electronics and power systems.
Project Location - Sambalpur
Aluminium industry electrical safety solutions.
Project Location - Srinagar
Military-grade electrical infrastructure.
Project Location - Kerala
Railway electrification and protection systems.
Project Location - Rajasthan
Cement industry electrical solutions.
Project Location - Haryana
State power distribution infrastructure.
Project Location - Noida
Industrial electrical and safety systems.
Project Location - Khavda, Bikaner
Large-scale construction and power projects.
Project Location - Noida
Private electricity distribution systems.
Project Location - Chhattisgarh
Thermal power plant electrical solutions.
Project Location - Shahjahanpur
Power generation and infrastructure systems.
Project Location - Gurugram
Aviation electrical infrastructure solutions.
Project Location - Noida
Smart city electrical and infrastructure systems.
SG Power Products Pvt. Ltd. is rated 4.2 out of 5 by 132 buyers on IndiaMART (checked November 2026). Its Noida office is rated 4.4 out of 5 from 78 Google reviews (checked October 2026). On IndiaMART, 83% of buyers report overall satisfaction, and SG Power scores 86% for response.
| Source | Rating or Score | Based On |
|---|---|---|
| IndiaMART | 4.2 out of 5 | 132 buyer ratings |
| IndiaMART user satisfaction | 83% | IndiaMART buyer feedback |
| IndiaMART response score | 86% | IndiaMART buyer feedback |
| Google (Noida office) | 4.4 out of 5 | 78 reviews |
The ratings cover all SG Power products, not air cooled servo stabilizers alone. Recent IndiaMART reviews come from buyers of three-phase servo controlled voltage stabilizers, earthing electrodes, lightning arresters, trefoil clamps and rectifiers.
Read SG Power reviews on IndiaMARTSG Power Products Pvt. Ltd. is among the air cooled servo voltage stabilizer manufacturers and suppliers in Sector 62, Noida, with its own factory in Ghaziabad. It supplies and services air cooled units across Delhi NCR, Uttar Pradesh and the rest of India. Buyers in Delhi, Noida and Gurugram get local sizing and service.
Looking for air cooled servo voltage stabilizer suppliers in Delhi NCR or an air cooled servo stabilizer in Noida? Our Sector 62 office and Ghaziabad factory serve the whole NCR, including Greater Noida, Sahibabad, Okhla, Faridabad and Gurugram. Searching for air cooled servo voltage stabilizer manufacturers near me, servo stabilizer suppliers near me or servo voltage stabilizer manufacturers in Ghaziabad? Contact us for local sizing. We also supply customers in 319+ cities, including Noida, Delhi, Gurugram, Ghaziabad, Faridabad, Lucknow, Kanpur, Jaipur, Ahmedabad, Mumbai, Pune, Hyderabad, Bengaluru and Chennai.
SG Power Products Pvt. Ltd.
17th Floor, L-17-1714B, The Iconic Corenthum, Plot No. A-41, Sector 62, Noida, Gautam Buddha Nagar, Uttar Pradesh 201309
Phone: +91-8929722150 · Email: enquiry@sgpower.co.in · Contact page
These are the main facts about SG Power air cooled servo voltage stabilizers, in short form for quick reference:
What it is: a servo voltage stabilizer cooled by airflow, with no oil tank.
Range: 10 kVA to 50 kVA; single phase 10 and 15 kVA, three phase 10 to 50 kVA.
Output: ±1% regulation, 97% efficiency tested to IS 2026 (Part 1), 100% load continuously.
Sizing rule: running kW ÷ 0.8 × 1.25 = kVA needed; choose the next size up.
Best site: a clean, dry, ventilated indoor room; oil cooling for dusty or hot sites.
Price: on request for every capacity, after a free load check of your site.
Ratings: 4.2 out of 5 from 132 buyers on IndiaMART, and 4.4 out of 5 from 78 Google reviews.
Maker and supplier: SG Power Products Pvt. Ltd., Noida, one of the air cooled servo voltage stabilizer manufacturers and suppliers in India, with its own factory in Ghaziabad.
* Prices are indicative. For the latest price, contact SG Power.
For the latest factory price, contact SG Power, direct air cooled servo voltage stabilizer suppliers, with your load list, phase, room conditions and lowest site voltage. From 10 kVA for a flat to 50 kVA for an office or workshop, we'll size it, build it to your site and support it after installation.
The specifications on this page come from SG Power's product catalogue (February 2026), its KNEUTRON servo stabilizer catalogue and its air cooled datasheets, checked in November 2026. Features and specifications may change as the technology is improved, so the final values are confirmed in our quotation.
SG Power Products Pvt. Ltd., product catalogue (February 2026): air cooled range, features, transformers, quality checks, certifications and clients
SG Power KNEUTRON servo stabilizer catalogue (air and oil cooled): input bands, output voltage, regulation, efficiency, output delay and protections
Voltage regulator, Wikipedia: background on electromechanical voltage regulators
Background reading: voltage regulator on Wikipedia.